Problem & Solution

Practical answers to common plastic material challenges

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MP surface microcracks

Production & Quality MP microcrack internal stress annealing stress concentration design

MP poor surface gloss

Molds & Tooling MP gloss mold polishing crystal scattering nucleating agent

MP fast UV aging

fast UV aging is caused by photo-oxidation; UV absorber and HALS are key

Material Analysis MP UV aging UV absorber HALS radical scavenging

MP material changeover residue

Processing Machinery MP changeover residue purging material screw disassembly dead zone cleaning

MP unstable shrinkage rate

Material Analysis MP shrinkage rate batch difference temperature control stability crystallinity consistency

MP compression molding incomplete curing

Molding Process MP compression molding incomplete curing curing temperature curing time compression pressure

MP internal coarse crystallization

Molding Process MP coarse crystallization spherulite refinement nucleating agent cooling rate

MP poor weather resistance

Material Analysis MP weather resistance UV absorber HALS photo-oxidation

MP extruded pipe ovality exceeding standard

Extrusion & Post MP pipe ovality annular cooling vacuum sizing uniform haul-off

MP extruded film gel particles

gel particles are caused by incomplete melting; raising temperature and mixing are key

Extrusion & Post MP film gel particle melting temperature mixing section high molecular weight component

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